<!--********************************************************************
* Copyright© 2000 - 2025 SuperMap Software Co.Ltd. All rights reserved.
*********************************************************************-->
<!--********************************************************************
* 该示例需要引入 
* Mapv (https://github.com/huiyan-fe/mapv)
*********************************************************************-->
<!DOCTYPE html>
<html lang="en-US">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=Edge" />
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no, width=device-width" />
    <title data-i18n="resources.title_mapvForceEdge"></title>
    <style>
      body {
        margin: 0;
        padding: 0;
      }

      #map {
        position: absolute;
        top: 0;
        bottom: 0;
        width: 100%;
      }

      .maplibregl-popup-close-button {
        outline: none;
      }
    </style>
    <script type="text/javascript" include="jquery" src="../js/include-web.js"></script>
    <script type="text/javascript" include="mapv" src="../../dist/maplibregl/include-maplibregl.js"></script>
  </head>
  <body style="margin: 0; overflow: hidden; background: #fff; width: 100%; height: 100%">
    <div id="map"></div>
    <script type="text/javascript">
      var attribution =
        "<a href='https://www.maplibre.com/about/maps/' target='_blank'>© MapLibre </a>" +
        " with <span>© <a href='https://iclient.supermap.io' target='_blank'>SuperMap iClient</a> | </span>" +
        " Map Data <span>© <a href='http://support.supermap.com.cn/product/iServer.aspx' target='_blank'>SuperMap iServer</a> | </span>" +
        "<a href='https://mapv.baidu.com' target='_blank'>© 2018 百度 MapV</a>";
      var host = window.isLocal ? window.server : 'https://iserver.supermap.io';
      var tileURL = host + '/iserver/services/map-china/rest/maps/ChinaDark/zxyTileImage.png?z={z}&x={x}&y={y}';
      var map = new maplibregl.Map({
        container: 'map',
        style: {
          version: 8,
          sources: {
            'raster-tiles': {
              attribution: attribution,
              type: 'raster',
              tiles: [tileURL],
              tileSize: 256
            }
          },
          layers: [
            {
              id: 'simple-tiles',
              type: 'raster',
              source: 'raster-tiles',
              minzoom: 0,
              maxzoom: 22
            }
          ]
        },
        center: [112, 35],
        zoom: 4
      });
      map.addControl(new maplibregl.NavigationControl(), 'top-left');
      map.addControl(new maplibregl.supermap.LogoControl({ link: 'https://iclient.supermap.io' }), 'bottom-right');
      new maplibregl.Popup({ closeOnClick: false })
        .setLngLat(map.getCenter())
        .setHTML(resources.text_iClient)
        .addTo(map);

      var randomCount = 500;

      var node_data = {
        0: { x: 108.154518, y: 36.643346 },
        1: { x: 121.485124, y: 31.235317 }
      };

      var edge_data = [{ source: '1', target: '0' }];

      var citys = [
        '北京',
        '天津',
        '上海',
        '重庆',
        '石家庄',
        '太原',
        '呼和浩特',
        '哈尔滨',
        '长春',
        '沈阳',
        '济南',
        '南京',
        '合肥',
        '杭州',
        '南昌',
        '福州',
        '郑州',
        '武汉',
        '长沙',
        '广州',
        '南宁',
        '西安',
        '银川',
        '兰州',
        '西宁',
        '乌鲁木齐',
        '成都',
        '贵阳',
        '昆明',
        '拉萨',
        '海口'
      ];

      map.on('load', function () {
        // 构造数据
        for (var i = 1; i < randomCount; i++) {
          var cityCenter = mapv.utilCityCenter.getCenterByCityName(citys[parseInt(Math.random() * citys.length)]);
          node_data[i] = {
            x: cityCenter.lng - 5 + Math.random() * 10,
            y: cityCenter.lat - 5 + Math.random() * 10
          };
          edge_data.push({ source: ~~(i * Math.random()), target: '0' });
        }

        var fbundling = mapv.utilForceEdgeBundling().nodes(node_data).edges(edge_data);

        var results = fbundling();

        var data = [];
        var timeData = [];

        for (var i = 0; i < results.length; i++) {
          var line = results[i];
          var coordinates = [];
          for (var j = 0; j < line.length; j++) {
            coordinates.push([line[j].x, line[j].y]);
            timeData.push({
              geometry: {
                type: 'Point',
                coordinates: [line[j].x, line[j].y]
              },
              count: 1,
              time: j
            });
          }

          data.push({
            geometry: {
              type: 'LineString',
              coordinates: transformCoords(coordinates)
            }
          });

          function transformCoords(coordinates) {
            var coords = [];
            coordinates.map(function (coordinate) {
              coords.push(coordinate);
            });
            return coords;
          }
        }

        var dataSet = new mapv.DataSet(data);

        var options = {
          strokeStyle: 'rgba(55, 50, 250, 0.3)',
          globalCompositeOperation: 'lighter',
          shadowColor: 'rgba(55, 50, 250, 0.5)',
          shadowBlur: 10,
          lineWidth: 1.0,
          draw: 'simple'
        };
        var mapVLinelayer = new maplibregl.supermap.MapvLayer(dataSet, options);
        map.addLayer(mapVLinelayer);

        var dataSet = new mapv.DataSet(timeData);

        var options = {
          fillStyle: 'rgba(255, 250, 250, 0.9)',
          globalCompositeOperation: 'lighter',
          size: 1.5,
          animation: {
            type: 'time',
            stepsRange: {
              start: 0,
              end: 100
            },
            trails: 1,
            duration: 5
          },
          draw: 'simple'
        };

        var mapVAnimationLinelayer = new maplibregl.supermap.MapvLayer(dataSet, options);

        map.addLayer(mapVAnimationLinelayer);
      });
    </script>
  </body>
</html>
